The current sheet is available on Google Docs, since it originated as a collaboration in the early days of our campaign. I would like to move it off Google and into an ODS file, but I haven't gotten to that.

(Link coming soon)

This sheet has been a collaborative effort within our group, but special credit must be given to Sax. Sax created virtually all of the formulas and hidden tables used on the sheet, undoubtedly the vast bulk of the contribution.